Income Taxes - Schedule of Net Deferred Tax Liability (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Deferred tax assets:
Net operating loss carryforwards	$ 10	$ 6
Unrealized foreign currency losses		4
Other reserves	1	4
Capital lease obligations	2	8
Deferred income	3	7
Property and equipment	7
Accrued compensation	2
Other	2	4
Total gross deferred tax assets	27	33
Less: valuation allowance	(4)
Deferred tax assets	23	33
Deferred tax liabilities:
Property and equipment	(77)	(2,382)
Investments	(4)	(75)
Amortizable intangible assets		(9)
Other	(1)	0
Deferred tax liabilities	(82)	(2,466)
Net deferred tax liability	$ (59)	$ (2,433)